IEC 61243-1 voltage detectors are compact (59 Dia x 270mm) and light (420g) and suitable for indoor and outdoor use, CATU IEC voltage detectors are designed for use with medium and high voltage electrical cables and equipment.

The MV detectors have a test button which after pressing a red LED flashes. A powerful audible signal is also omitted > 60 dB(A)/2 and when releasing the button the timed green LED lights up indicating that the voltage detector is in good working order.